http2wrapper.js 19 KB

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  1. "use strict";
  2. const Stream = require('stream');
  3. const net = require('net');
  4. const tls = require('tls');
  5. // eslint-disable-next-line node/no-deprecated-api
  6. const {
  7. parse
  8. } = require('url');
  9. const process = require('process');
  10. const semverGte = require('semver/functions/gte');
  11. let http2;
  12. if (semverGte(process.version, 'v10.10.0')) http2 = require('http2');else throw new Error('superagent: this version of Node.js does not support http2');
  13. const {
  14. HTTP2_HEADER_PATH,
  15. HTTP2_HEADER_STATUS,
  16. HTTP2_HEADER_METHOD,
  17. HTTP2_HEADER_AUTHORITY,
  18. HTTP2_HEADER_HOST,
  19. HTTP2_HEADER_SET_COOKIE,
  20. NGHTTP2_CANCEL
  21. } = http2.constants;
  22. function setProtocol(protocol) {
  23. return {
  24. request(options) {
  25. return new Request(protocol, options);
  26. }
  27. };
  28. }
  29. class Request extends Stream {
  30. constructor(protocol, options) {
  31. super();
  32. const defaultPort = protocol === 'https:' ? 443 : 80;
  33. const defaultHost = 'localhost';
  34. const port = options.port || defaultPort;
  35. const host = options.host || defaultHost;
  36. delete options.port;
  37. delete options.host;
  38. this.method = options.method;
  39. this.path = options.path;
  40. this.protocol = protocol;
  41. this.host = host;
  42. delete options.method;
  43. delete options.path;
  44. const sessionOptions = {
  45. ...options
  46. };
  47. if (options.socketPath) {
  48. sessionOptions.socketPath = options.socketPath;
  49. sessionOptions.createConnection = this.createUnixConnection.bind(this);
  50. }
  51. this._headers = {};
  52. const session = http2.connect(`${protocol}//${host}:${port}`, sessionOptions);
  53. this.setHeader('host', `${host}:${port}`);
  54. session.on('error', error => this.emit('error', error));
  55. this.session = session;
  56. }
  57. createUnixConnection(authority, options) {
  58. switch (this.protocol) {
  59. case 'http:':
  60. return net.connect(options.socketPath);
  61. case 'https:':
  62. options.ALPNProtocols = ['h2'];
  63. options.servername = this.host;
  64. options.allowHalfOpen = true;
  65. return tls.connect(options.socketPath, options);
  66. default:
  67. throw new Error('Unsupported protocol', this.protocol);
  68. }
  69. }
  70. setNoDelay(bool) {
  71. // We can not use setNoDelay with HTTP/2.
  72. // Node 10 limits http2session.socket methods to ones safe to use with HTTP/2.
  73. // See also https://nodejs.org/api/http2.html#http2_http2session_socket
  74. }
  75. getFrame() {
  76. if (this.frame) {
  77. return this.frame;
  78. }
  79. const method = {
  80. [HTTP2_HEADER_PATH]: this.path,
  81. [HTTP2_HEADER_METHOD]: this.method
  82. };
  83. let headers = this.mapToHttp2Header(this._headers);
  84. headers = Object.assign(headers, method);
  85. const frame = this.session.request(headers);
  86. frame.once('response', (headers, flags) => {
  87. headers = this.mapToHttpHeader(headers);
  88. frame.headers = headers;
  89. frame.statusCode = headers[HTTP2_HEADER_STATUS];
  90. frame.status = frame.statusCode;
  91. this.emit('response', frame);
  92. });
  93. this._headerSent = true;
  94. frame.once('drain', () => this.emit('drain'));
  95. frame.on('error', error => this.emit('error', error));
  96. frame.on('close', () => this.session.close());
  97. this.frame = frame;
  98. return frame;
  99. }
  100. mapToHttpHeader(headers) {
  101. const keys = Object.keys(headers);
  102. const http2Headers = {};
  103. for (let key of keys) {
  104. let value = headers[key];
  105. key = key.toLowerCase();
  106. switch (key) {
  107. case HTTP2_HEADER_SET_COOKIE:
  108. value = Array.isArray(value) ? value : [value];
  109. break;
  110. default:
  111. break;
  112. }
  113. http2Headers[key] = value;
  114. }
  115. return http2Headers;
  116. }
  117. mapToHttp2Header(headers) {
  118. const keys = Object.keys(headers);
  119. const http2Headers = {};
  120. for (let key of keys) {
  121. let value = headers[key];
  122. key = key.toLowerCase();
  123. switch (key) {
  124. case HTTP2_HEADER_HOST:
  125. key = HTTP2_HEADER_AUTHORITY;
  126. value = /^http:\/\/|^https:\/\//.test(value) ? parse(value).host : value;
  127. break;
  128. default:
  129. break;
  130. }
  131. http2Headers[key] = value;
  132. }
  133. return http2Headers;
  134. }
  135. setHeader(name, value) {
  136. this._headers[name.toLowerCase()] = value;
  137. }
  138. getHeader(name) {
  139. return this._headers[name.toLowerCase()];
  140. }
  141. write(data, encoding) {
  142. const frame = this.getFrame();
  143. return frame.write(data, encoding);
  144. }
  145. pipe(stream, options) {
  146. const frame = this.getFrame();
  147. return frame.pipe(stream, options);
  148. }
  149. end(data) {
  150. const frame = this.getFrame();
  151. frame.end(data);
  152. }
  153. abort(data) {
  154. const frame = this.getFrame();
  155. frame.close(NGHTTP2_CANCEL);
  156. this.session.destroy();
  157. }
  158. }
  159. exports.setProtocol = setProtocol;
  160. //# sourceMappingURL=data:application/json;charset=utf-8;base64,{"version":3,"names":["Stream","require","net","tls","parse","process","semverGte","http2","version","Error","HTTP2_HEADER_PATH","HTTP2_HEADER_STATUS","HTTP2_HEADER_METHOD","HTTP2_HEADER_AUTHORITY","HTTP2_HEADER_HOST","HTTP2_HEADER_SET_COOKIE","NGHTTP2_CANCEL","constants","setProtocol","protocol","request","options","Request","constructor","defaultPort","defaultHost","port","host","method","path","sessionOptions","socketPath","createConnection","createUnixConnection","bind","_headers","session","connect","setHeader","on","error","emit","authority","ALPNProtocols","servername","allowHalfOpen","setNoDelay","bool","getFrame","frame","headers","mapToHttp2Header","Object","assign","once","flags","mapToHttpHeader","statusCode","status","_headerSent","close","keys","http2Headers","key","value","toLowerCase","Array","isArray","test","name","getHeader","write","data","encoding","pipe","stream","end","abort","destroy","exports"],"sources":["../../src/node/http2wrapper.js"],"sourcesContent":["const Stream = require('stream');\nconst net = require('net');\nconst tls = require('tls');\n// eslint-disable-next-line node/no-deprecated-api\nconst { parse } = require('url');\nconst process = require('process');\nconst semverGte = require('semver/functions/gte');\n\nlet http2;\n\nif (semverGte(process.version, 'v10.10.0')) http2 = require('http2');\nelse\n  throw new Error('superagent: this version of Node.js does not support http2');\n\nconst {\n  HTTP2_HEADER_PATH,\n  HTTP2_HEADER_STATUS,\n  HTTP2_HEADER_METHOD,\n  HTTP2_HEADER_AUTHORITY,\n  HTTP2_HEADER_HOST,\n  HTTP2_HEADER_SET_COOKIE,\n  NGHTTP2_CANCEL\n} = http2.constants;\n\nfunction setProtocol(protocol) {\n  return {\n    request(options) {\n      return new Request(protocol, options);\n    }\n  };\n}\n\nclass Request extends Stream {\n  constructor(protocol, options) {\n    super();\n    const defaultPort = protocol === 'https:' ? 443 : 80;\n    const defaultHost = 'localhost';\n    const port = options.port || defaultPort;\n    const host = options.host || defaultHost;\n\n    delete options.port;\n    delete options.host;\n\n    this.method = options.method;\n    this.path = options.path;\n    this.protocol = protocol;\n    this.host = host;\n\n    delete options.method;\n    delete options.path;\n\n    const sessionOptions = { ...options };\n    if (options.socketPath) {\n      sessionOptions.socketPath = options.socketPath;\n      sessionOptions.createConnection = this.createUnixConnection.bind(this);\n    }\n\n    this._headers = {};\n\n    const session = http2.connect(\n      `${protocol}//${host}:${port}`,\n      sessionOptions\n    );\n    this.setHeader('host', `${host}:${port}`);\n\n    session.on('error', (error) => this.emit('error', error));\n\n    this.session = session;\n  }\n\n  createUnixConnection(authority, options) {\n    switch (this.protocol) {\n      case 'http:':\n        return net.connect(options.socketPath);\n      case 'https:':\n        options.ALPNProtocols = ['h2'];\n        options.servername = this.host;\n        options.allowHalfOpen = true;\n        return tls.connect(options.socketPath, options);\n      default:\n        throw new Error('Unsupported protocol', this.protocol);\n    }\n  }\n\n  setNoDelay(bool) {\n    // We can not use setNoDelay with HTTP/2.\n    // Node 10 limits http2session.socket methods to ones safe to use with HTTP/2.\n    // See also https://nodejs.org/api/http2.html#http2_http2session_socket\n  }\n\n  getFrame() {\n    if (this.frame) {\n      return this.frame;\n    }\n\n    const method = {\n      [HTTP2_HEADER_PATH]: this.path,\n      [HTTP2_HEADER_METHOD]: this.method\n    };\n\n    let headers = this.mapToHttp2Header(this._headers);\n\n    headers = Object.assign(headers, method);\n\n    const frame = this.session.request(headers);\n\n    frame.once('response', (headers, flags) => {\n      headers = this.mapToHttpHeader(headers);\n      frame.headers = headers;\n      frame.statusCode = headers[HTTP2_HEADER_STATUS];\n      frame.status = frame.statusCode;\n      this.emit('response', frame);\n    });\n\n    this._headerSent = true;\n\n    frame.once('drain', () => this.emit('drain'));\n    frame.on('error', (error) => this.emit('error', error));\n    frame.on('close', () => this.session.close());\n\n    this.frame = frame;\n    return frame;\n  }\n\n  mapToHttpHeader(headers) {\n    const keys = Object.keys(headers);\n    const http2Headers = {};\n    for (let key of keys) {\n      let value = headers[key];\n      key = key.toLowerCase();\n      switch (key) {\n        case HTTP2_HEADER_SET_COOKIE:\n          value = Array.isArray(value) ? value : [value];\n          break;\n        default:\n          break;\n      }\n\n      http2Headers[key] = value;\n    }\n\n    return http2Headers;\n  }\n\n  mapToHttp2Header(headers) {\n    const keys = Object.keys(headers);\n    const http2Headers = {};\n    for (let key of keys) {\n      let value = headers[key];\n      key = key.toLowerCase();\n      switch (key) {\n        case HTTP2_HEADER_HOST:\n          key = HTTP2_HEADER_AUTHORITY;\n          value = /^http:\\/\\/|^https:\\/\\//.test(value)\n            ? parse(value).host\n            : value;\n          break;\n        default:\n          break;\n      }\n\n      http2Headers[key] = value;\n    }\n\n    return http2Headers;\n  }\n\n  setHeader(name, value) {\n    this._headers[name.toLowerCase()] = value;\n  }\n\n  getHeader(name) {\n    return this._headers[name.toLowerCase()];\n  }\n\n  write(data, encoding) {\n    const frame = this.getFrame();\n    return frame.write(data, encoding);\n  }\n\n  pipe(stream, options) {\n    const frame = this.getFrame();\n    return frame.pipe(stream, options);\n  }\n\n  end(data) {\n    const frame = this.getFrame();\n    frame.end(data);\n  }\n\n  abort(data) {\n    const frame = this.getFrame();\n    frame.close(NGHTTP2_CANCEL);\n    this.session.destroy();\n  }\n}\n\nexports.setProtocol = 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